The Vieuxtemps Guarneri violin, made in 1741 by esteemed Guarneri del Gesù It's one of the last violins created by the renowned craftsman from Cremona in Italy. If it manages to sell for $18 million (£12 million) at Bein & Fushi of Chicago, it would become the most expensive musical instrument in the world. Some of the most famous names have played this violin in concert halls around the world.
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